George Green, has published several handbooks that he claims were "written by the ET's." In the modern era, there has been a lively history of transmissions from aliens, dating back to the early 1950's, when George Adamski began sharing his "transdimensional" telepathic messages that purportedly came from Venusians. Around this time contactee George Van Tassel was also reporting messages from unseen "space brothers" such as Ashtar from "commandant quadra sector, patrol station Schare, all projections, all waves."
As Jon Klimo chronicled in his seminal investigational book Channeling, "space brother" messages have "amassed over 35 years to fill many volumes." Of particular interest, he writes, is the "high degree of correlation across the content of this material."
Perhaps typical of these kinds of messages, is this excerpt, clairaudiently channeled by Aleutia Francesca of Oregon in the 1950's: "My brothers, my sisters in Light, I, Orlon, communicate with you from the craft stationed above your mountain locality...We speak of a midnight hour; we speak of changes, changes vast and tremendous on the face of planet Earth: Changes in frequency, of density, of consciousness of being."